Senior Software Engineer in London

• Build and scale LLM-enabled product features from concept to production
• Design APIs, backend systems, and AI-powered workflows
• Improve model quality through evaluation, monitoring, and guardrails
• Optimise token usage, performance, and cost efficiency
• Collaborate on product strategy, roadmap, and architecture
• Help establish engineering best practices as the team grows

Senior Product Engineer
London (Hybrid, 3 days)

Join a well-funded AI startup building a behavioural intelligence platform for financial services. As an early engineering hire, you'll play a key role in shaping the product, architecture, and engineering culture while working closely with founders and senior leadership.

The Company
They are developing an AI-powered platform that helps organisations better understand customer behaviour and decision-making. With strong early customer traction and enterprise PoCs underway, they are now scaling their product and engineering capability.
The Role

• Strong product engineering background
• Experience building and launching an LLM-powered product
• Backend expertise, ideally with Node.js and TypeScript
• Experience with APIs, cloud infrastructure, and scalable systems
• Comfortable operating with autonomy in an early-stage environment
• Strong communication and stakeholder management skills

• £115,000 to £140,000 base salary
• Meaningful equity package
• Hybrid working in London
• Significant ownership and autonomy
• Opportunity to shape a product and engineering function from an early stage